It'so happens that I know the man.

碰巧我认识那个人.

《现代英汉综合大词典》

It'so happens that the file number 1947 was the year I was born; so miraculous!

碰巧这个文档编号1947是我出生的年份, 太奇妙了!

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It'so happens that we have the same birthday.

事情就这样巧,我们是同一天生日.

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It'so happens that I met him on the train just yesterday.

刚巧,我昨天在火车上碰见他.

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